Free chronological age calculator for Pearson assessments — enter a date of birth and test date for the exact age at testing in years, months & days. No sign-up.

Hey Product Hunt 👋 I built this because working out an exact age — years, months, and days — is surprisingly fiddly. Educators and psychologists need it for "age at testing" on assessments like the WISC and WIAT, parents need it for school cut-offs, and forms often ask for it too. Most tools online bury the answer under ads or ask you to sign up. So I made one that just does the job: enter a birth date (and test date if you need it), get the precise chronological age instantly — plus total months, weeks, days, and a birthday countdown. It's free, runs in your browser, no sign-up, no watermarks. It's part of OneTapTool, a small collection of free tools I'm building. Would love your feedback on what to add next 🙏

How does it handle leap year births when the test date falls on Feb 29th — does it default to Feb 28th or March 1st?

Love that it spits out the age broken down into years, months, and days instead of just a decimal—exactly what I need for scoring Pearson assessments. The no-sign-up approach makes it painless to use mid-session.

Finally a no-fuss age calculator that actually gives years, months, and days without making me sign up or watch an ad.

@vedat2010893 you can also check your reaction time visit my website you will see in all tool page

How does it handle leap year births when the test date falls on Feb 29th — does it default to Feb 28th or March 1st?

Finally a no-fuss age calculator that actually gives years, months, and days without making me sign up or watch an ad.

@vedat2010893 you can also check your reaction time visit my website you will see in all tool page

OneTapTool Chronological Age Calculator

Exact chronological age in seconds — free, no sign-up

Exact chronological age in seconds — free, no sign-up